Now we need a source for just the right coil spring. AFM flap spring? old Thermostat bi-metal coil spring, innards from a tape measure? Think man!!

mcmastercarr sells torsional springs by the butt load. And they deliver in like a day.

behold the awesomeness of the kaminari manifold!

behold the arse reaming price off 699!!!

Leon, want to go half-sies

Let's do it. I'll use it for the first half of the year, and ship it to you for the second half.

In my research, I've found that the high-quality castings are basically copies of the Nissan Comp manifold, which was destined for the high-performance versions of 240Zs (i.e. Nissan initially planned to sell 240Zs in the US with triple Mikunis and an extra 15hp). The info came from Tony D, among others.

Manifolds like the Tomei and Kameari are essentially the same casting as the Nissan Comp mani, and I think TWM is similar. There are other quality manifolds out there that differ in casting, like FET, SK, Mikuni, etc. You can get a new TWM intake for $450 or so.

I'm on the lookout if anyone's looking to unload.

Not to muddy up this tread but would you know if this is a kaminari manifold? There is no numbers or name on it and it only has two mounting brackets. not sure if i will run into binding promlems also?

Thanks.

I'd say that's a TWM or a TWM copy.

I have not given up totally on the Two rod end configuration. I have a Universal kit from Peirce manifolds coming in that uses a 3/8 steel rod and much beefier connecting hardware than what came in my Redline Weber kit. Pics to follow.

John, don't confuse us with simplicity and reason at this point. We are on a design adventure here!

German engineering at its finest. Have fun in the Super Adventure Club. :-)

The Return of Chef (Season 10, Episode 1) - Full Episode Player - South Park Studios

Pierce make this universal lever for the rod end. Difficult for your application but here in the thread for others who may stumble across it.

It looks like machining two flat surfaces is required.

Edited March 1, 201312 yr by Blue

I am going to place an order from mcmaster today for my collar. I can take it to a machine shop here at NASA off duty and get some holes drilled. Then I will source a torsional return spring. It will be nice not having a linear spring that attaches to the valve cover. If nothing else, it will clean up the engine bay that much more.

So any luck with a photo detailing just the linkage as it stands today?

Browsing for manifolds on ebay, I happened to come across an FET with a torsional return spring. The photos aren't great, but you can see that they simply used a collet on the throttle rod to fix one end and wrapped the other end around the rod end. Crude yes, but it may work well.

JDM FET Intake Manifold Weber 40 45 Dcoe Datsun 240Z 260z 280z L24 L26 L28 6CYL | eBay

There goes my patent hopes!

HAHAA

I am working on that picture!

I got a few more, but you get the gist

I think your A may need to be shorter to gain mechanical advantage (the push rods with the ball and socket joints may need shorter centre sections).

The arm connected to the cable should also have symmetrical angles swept between fully open and fully closed just like A&C.

This could be a first step.

Re-drilling and tapping the middle support would be good (or updating to a larger diameter stiffer rod)

Note:

• symmetry of sweep
  
• relative sizes of A and C
  
• relative parallelism of A and C at start
  

Edited March 2, 201312 yr by Blue